For more information see the Supplementary Notes for the Taxon Dictionary, which explains the names and synonyms, and these Instructions on how to use the online Taxon Dictionary which includes details of the Conservation Evaluation codes.
| Count | Name | Authority | Is Current Name? | Current Taxon Name | Synonyms | BLS Number | Comments | Conservation Evaluation | Group | Account & Map |
|---|---|---|---|---|---|---|---|---|---|---|
| 2911 | Gyalecta truncigena | (Ach.) Hepp (1853) | Yes | Gyalecta truncigena | 541 | LC | Gyalecta truncigena | |||
| 2912 | Gyalecta truncigena var. derivata | (Nyl.) Boistel | No | Gyalecta derivata | 535 | LC NS | ||||
| 2913 | Gyalecta ulmi | (Sw.) Zahlbr. (1905) | No | Phialopsis ulmi | 542 | EN C2 NR P Eng Sc S8 IR | ||||
| 2914 | Gyalecta wahlenbergiana | Ach. (1808) | No | Gyalecta geoica | 538 | LC NS | ||||
| 2915 | Gyalectina carneolutea | (Turner) Vězda (1969) | No | Cryptolechia carneolutea | 473 | EN A2, C1+2, D NS P Eng IR | ||||
| 2916 | Gyalectiphila achromatica | (B. Sutton) Cl. Roux & Diederich (2024) | Yes | Gyalectiphila achromatica | Refractohilum achromaticum | 2485 | NE NR | LF | Gyalectiphila achromatica | |
| 2917 | Gyalectiphila pluriseptata | (Etayo & Cl. Roux) Cl. Roux & Diederich (2024) | Yes | Gyalectiphila pluriseptata | Refractohilum pluriseptatum | 2183 | NE NR | LF | Gyalectiphila pluriseptata | |
| 2918 | Gyalidea diaphana | (Körb. ex Nyl.) Vězda (1978) | Yes | Gyalidea diaphana | 1655 | DD NR Sc | Gyalidea diaphana | |||
| 2919 | Gyalidea fritzei | (Stein) Vězda (1966) | Yes | Gyalidea fritzei | Gyalecta fritzei | 543 | NT NR Sc | Gyalidea fritzei | ||
| 2920 | Gyalidea fritzei var. rivularis | (Eitner) Vězda | No | Gyalidea rivularis | 2421 | VU D2 NR Sc | ||||
| 2921 | Gyalidea hyalinescens | (Nyl.) Vězda (1966) | Yes | Gyalidea hyalinescens | Bacidia hyalinescens | 544 | NT NR Sc | Gyalidea hyalinescens | ||
| 2922 | Gyalidea hyalinescens var. pauciseptata | van den Boom (1995) | No | Gyalidea psammoica | 2670 | NE NR | ||||
| 2923 | Gyalidea lecideopsis | (A. Massal.) Lettau ex Vězda (1966) | Yes | Gyalidea lecideopsis | 545 | DD NR Sc | Gyalidea lecideopsis | |||
| 2924 | Gyalidea psammoica | (Nyl.) Lettau ex Vězda (1996) | Yes | Gyalidea psammoica | Gyalidea hyalinescens var. pauciseptata | 2670 | NE NR | Gyalidea psammoica | ||
| 2925 | Gyalidea rivularis | (Eitner) J. Nowak & Tobol. (1975) | Yes | Gyalidea rivularis | 2421 | VU D2 NR Sc | Gyalidea rivularis | |||
| 2926 | Gyalidea roseola | (Arnold) Lettau ex Vězda (1966) | Yes | Gyalidea roseola | Gyalecta roseola | 546 | CR B, D NR P Sc | Gyalidea roseola | ||
| 2927 | Gyalidea subscutellaris | (Vězda) Vězda (1966) | Yes | Gyalidea subscutellaris | 1703 | NT NR M* | Gyalidea subscutellaris | |||
| 2928 | Gyalideopsis anastomosans | P. James & Vězda | No | Jamesiella anastomosans | 547 | LC | ||||
| 2929 | Gyalideopsis crenulata | Coppins & Aptroot (2008) | Yes | Gyalideopsis crenulata | 2505 | LC NR M* | Gyalideopsis crenulata | |||
| 2930 | Gyalideopsis cyanophila | Sérus. (1998) | Yes | Gyalideopsis cyanophila | 2693 | NE NR | Gyalideopsis cyanophila | |||
| 2931 | Gyalideopsis muscicola | P. James & Vězda (1972) | Yes | Gyalideopsis muscicola | 548 | LC NS Sc IR | Gyalideopsis muscicola | |||
| 2932 | Gyalideopsis scotica | P. James | No | Jamesiella scotica | 549 | NT NS E P Sc IR | ||||
| 2933 | Gyalolechia bracteata | (Hoffm.) A. Massal. (1852) | Yes | Gyalolechia bracteata | Fulgensia bracteata var. alpina | 512 | VU D2 NR Sc | Gyalolechia bracteata | ||
| 2934 | Gyalolechia flavorubescens | (Huds.) Søchting, Frödén & Arup (2013) | Yes | Gyalolechia flavorubescens | Caloplaca aurantiaca auct. p.p.; Caloplaca flavorubescens; Opeltia flavorubescens | 254 | EN A NS P Eng Sc Wa | Gyalolechia flavorubescens | ||
| 2935 | Gyalolechia flavovirescens | Søchting, Frödén & Arup (2013) | Yes | Gyalolechia flavovirescens | Caloplaca aurantiaca auct. p.p.; Caloplaca flavovirescens; Laundonia flavovirescens | 255 | LC | Gyalolechia flavovirescens | ||
| 2936 | Gyalolechia fulgens | (Sw.) Søchting, Frödén & Arup (2013) | Yes | Gyalolechia fulgens | Fulgensia fulgens | 513 | EN B1+2 NR P Eng Wa | Gyalolechia fulgens | ||
| 2937 | Gyrographa gyrocarpa | (Taylor) Ertz & Tehler (2014) | Yes | Gyrographa gyrocarpa | Opegrapha gyrocarpa | 947 | LC | Gyrographa gyrocarpa | ||
| 2938 | Gyrographa saxigena | (Taylor) Ertz & Tehler (2014) | Yes | Gyrographa saxigena | Opegrapha saxigena | 961 | LC NS Sc IR | Gyrographa saxigena | ||
| 2939 | Gyrophora arctica | Ach. | No | Umbilicaria arctica | Umbilicaria arctica (Ach.) Nyl., incorrectly reported from the British Isles | |||||
| 2940 | Gyrophora cirrhosa | auct. brit., non (Hoffm) Vain. | No | Umbilicaria crustulosa | 1445 | VU D2 NR |